Enable Gmail as Chrome’s Email Link Handler.

1. Login to Gmail using Chrome.

2. At the top of the page you should see a permissions bar asking for permission to

“Allow Gmail (mail.google.com) to open all email links?” click “Use Gmail”…That should be all you need to do.
 Or…if you didn’t see the

“Allow Gmail to open all email links” On the right side of Toolbar, click the wrench

3. Scroll down to the “Web-browsing tools” section.

4. Check the box next to “Use Gmail for ‘Mail To’ links” .

5. Click Save.